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Sources

Every dimension the house is generated from is below, with its class and its citation. This is the project’s honesty layer, and it is given a room of its own because a smooth 3D render implies a precision the sources do not have.

The dimensions

DimensionValueClassWhat it means
middleWidth6.40 mIf 20% out: 1.28 mInterpolatedWidth of the middle room, where the council sits.No source
bayLength2.50 mIf 20% out: 2.50 mInterpolatedLength of one bay along the hall.No source
aisleWidth2.20 mIf 20% out: 0.88 mInterpolatedWidth of each selaso. The two are the same, because that is what kembar in its name means.No source
selasoDrop0.32 mIf 20% out: 0.06 mInterpolatedHow far the selaso floor falls below the middle one. It is the only dimension in this project that lowers a floor in order to say something, and what it says is about an activity rather than about a person.No source
stepLimit0.42 mIf 20% out: 0.08 mInterpolatedHow high a single step can be and still be crossed without thinking about it. Not from a source about Riau — its own source key so that this shows. The fall has to stay inside it, because people cross it many times in one meeting.Ukuran tubuh manusia yang ditetapkan penulis, bukan dari sumber tentang Melayu Riau. Kunci yang sama dipakai pak Bali, Waruga, Ngada, Atoni, Rimba, dan Sahu.
floorHeight1.35 mIf 20% out: 0.27 mInterpolatedHeight of the middle floor above the ground.No source
padHeight0.30 mIf 20% out: 0.06 mInterpolatedHeight of the stone under a post; nothing is buried.No source
padSocket0.05 mMoves no measurementInterpolatedDepth of the hollow in the stone the post foot sits in, so the two actually engage.No source
postSection0.19 mMoves no measurementInterpolatedSection of a post.No source
bearerDepth0.20 mMoves no measurementInterpolatedDepth of a floor bearer.No source
deckThickness0.05 mMoves no measurementInterpolatedThickness of a floor plank.No source
railHeight0.75 mMoves no measurementInterpolatedHeight of the low rail at the edge of the selaso. Low on purpose: a selaso is a way through, and a way through is not closed off.No source
wallHeight2.50 mIf 20% out: 0.50 mInterpolatedHeight of the middle room’s board wall to the plate.No source
wallThickness0.06 mMoves no measurementInterpolatedThickness of a wall board.No source
anjungRise0.28 mMoves no measurementInterpolatedRise of the anjung floor above the middle one. A Minang rumah gadang also raises a floor at its ends, and there what is stated is which laras the household follows; here what is raised is where the hosts sit at a ceremony.No source
anjungDepth2.80 mMoves no measurementInterpolatedDepth of an anjung at the end of the hall.No source
pelantarDepth2.40 mMoves no measurementInterpolatedDepth of the rear deck.No source
roofRise3.40 mIf 20% out: 0.68 mInterpolatedRise of the ridge above the plate.No source
ridgeShare0.50Moves no measurementInterpolatedLength of the ridge against the length of the hall.No source
eaveOversail1.10 mMoves no measurementInterpolatedOverhang of the roof, which shades the selaso under it.No source
roofThickness0.10 mMoves no measurementInterpolatedThickness of the shingle covering.No source
selembayungHeight1.10 mMoves no measurementInterpolatedHeight of the selembayung crossing at the end of the ridge. Its carving itself is not modelled.No source
selembayungSection0.09 mMoves no measurementInterpolatedSection of a selembayung member.No source
yardRadius14.00 mMoves no measurementInterpolatedRadius of the hall’s yard, beside the river that is this country’s road.No source
jointEngagement0.30Moves no measurementInterpolatedDepth of the tested joint engagement, as a share of the smaller member.No source
theAisleHasFallen1Moves no measurementCanonThe selaso floor falls one step below the middle floor. Every other stepped floor in this project is raised to say something about the person standing on it — a rumah limas seats a guest on the step matching their standing, a rumah gadang raises an anjuang according to its laras, a malige lifts a storey for a sultan. This one is lowered to say something about an activity: passing through is not being present, so the way through is not on the level of the room.Arsitektur Tradisional Daerah Riau (Departemen Pendidikan dan Kebudayaan, Jakarta, 1986).
twinAndAlike2Moves no measurementCanonTwo selaso, and they are alike: the same width, the same fall, on both sides. That is what kembar in its name means, and a hall with one selaso, or with two at different levels, is a different building with a different name.Effendy, T., Tunjuk Ajar Melayu (Balai Kajian dan Pengembangan Budaya Melayu, Yogyakarta, 2004).
oneStepNotAStair1Moves no measurementCanonThe fall is one step, not one storey. People cross it many times in a single meeting, so it has to stay inside the size of step somebody crosses without thinking — which is this building’s limit, and the limit is in a person’s body rather than in its timber.Wahid, J. & Alamsyah, B., Arsitektur & Sosial Budaya Sumatera Utara dan Melayu (Graha Ilmu, Yogyakarta, 2013).
youPassWithoutEntering1Moves no measurementCanonBoth selaso run clear from end to end, so somebody can walk the whole length of the hall without once setting foot in the middle room. This is the measurable half of what the fallen floor means.Effendy, T., Tunjuk Ajar Melayu (Balai Kajian dan Pengembangan Budaya Melayu, Yogyakarta, 2004).

Bibliography

  • depdikbud-1986 · reference

    Arsitektur Tradisional Daerah Riau (Departemen Pendidikan dan Kebudayaan, Jakarta, 1986).

  • effendy-2004 · reference

    Effendy, T., Tunjuk Ajar Melayu (Balai Kajian dan Pengembangan Budaya Melayu, Yogyakarta, 2004).

  • wahid-2013 · reference

    Wahid, J. & Alamsyah, B., Arsitektur & Sosial Budaya Sumatera Utara dan Melayu (Graha Ilmu, Yogyakarta, 2013).

  • anthropometry · none

    Ukuran tubuh manusia yang ditetapkan penulis, bukan dari sumber tentang Melayu Riau. Kunci yang sama dipakai pak Bali, Waruga, Ngada, Atoni, Rimba, dan Sahu.

Which of these matters most

Nearly every dimension on this page is the author’s own. What the provenance bar does not say is whether that matters. Each row below is computed by rebuilding the house: one dimension is pushed 20%, and the house is measured to see how far it follows. Nothing is estimated — the figures are the difference between two runs of the generator.

  1. 1bayLength2.50 mlength of the hall
  2. 2middleWidth1.28 mwidth over all
  3. 3aisleWidth0.88 mwidth over all
  4. 4roofRise0.68 mheight of the ridge
  5. 5wallHeight0.50 mheight of the ridge
  6. 6floorHeight0.27 mheight of the ridge
  7. 7stepLimit0.08 mmargin against a single step
  8. 8selasoDrop0.06 mthe fall of the aisle floor

If only one dimension could be surveyed, this is the one. This is sensitivity, not uncertainty: it shows what moves, not how likely the value is to be wrong. The 20% is itself the author’s choice.

Invariants

There is no measured drawing yet, so correctness rests on structural truth. These checks fail the build.

  • pass
    Bilateral symmetry about Symmetric about the axis of the hall, x = 0 — and that is what kembar in its name means

    672 points; largest mirror deviation 0.00 mm.

  • pass
    Every tenon contained in its mortise

    26 pasak, takik and tumpu joints; every one engaged.

  • pass
    No joint spans more than one stage

    Every joint engages two parts from the same stage or from consecutive ones.

  • pass
    Stage ordering, and nothing below ground

    83 parts, every one bearing on something already standing or on the ground.

  • pass
    Mesh integrity: indices, triangles, normals

    6 triangles; indices in range, none degenerate, every normal unit length.

  • pass
    Both aisles have fallen, and fallen the same

    Two selaso, each 2.20 m wide, both fallen 32 cm below the middle floor. Every other stepped floor in this project is raised to say something about a person; this one is lowered to say something about an activity.

  • pass
    The fall is one step, not a storey

    A 32 cm fall against the 42 cm a person crosses without thinking about it. People cross it many times in one meeting: one figure belongs to the custom, the other to the body, and nothing relates them.

  • pass
    You can walk the length of the hall without entering the room

    Both selaso run clear for 12.5 m, with only a low rail on their outer edge and nothing across them. This is the measurable half of the fallen floor: passing through is not being present.

  • pass
    What is raised is raised only at the ends

    2 anjung, both outside the middle room and 28 cm above it. The middle floor itself stays one plane: a raised floor inside the room would be the rumah limas’s claim, and this building does not make it.

  • pass
    Every part declares the dimensions it came from

    83 parts, every one tagged. By least-sourced input: 0 measured, 0 canon, 83 interpolated.

  • skipped
    Checked against a measured drawing of a real house

    Skipped. No measured drawing has been wired in, so there is nothing to compare against. This check will not be made to pass by weakening it.

What a check is preventing

Ten green rows are not a reason to believe anything. So one check is run against a house built to break it, and what is printed below is that check’s own verdict rather than a description of it.

Dropping the selaso further is the most direct way to make this building say what it means more clearly: the difference between passing through and being present is the whole content of the plan, and a deeper fall states it from further away. No part of the building objects — the two aisles are still twins, still clear end to end, the roof still covers all three floors. What runs out is the step. People cross that edge many times in one meeting, and past a point it is no longer something crossed without thinking — so the hall that states its point most firmly is the hall whose aisles people stop using as the way through.

The house as built

pass32 cm / 42 cmthe fall of the floor · a single step

A 32 cm fall against the 42 cm a person crosses without thinking about it. People cross it many times in one meeting: one figure belongs to the custom, the other to the body, and nothing relates them.

Rear prow raised to 0.43 m

fail43 cm / 42 cmthe fall of the floor · a single step

the fall is 43 cm and a single step is at most 42 cm

The second house is never rendered. It is built during the build, failed, and thrown away.

This bar moves as real surveys are wired in. That movement is the project's progress metric.